Lubing o rings of twist on lites?

Should I do it; if so, what lube should I use?

Lubrication is required any time metal moves against metal. I use Haynes Lubri-Film or Molykote 55, with a preference for the former. Anything more than a thin coat is a waste. It's good to wipe your O-rings down and re-apply on a regular basis. It will increase water resistance and prevent premature wear of your O-rings and threads.

Maglite suggests using plain old petroleum jelly...which I have been using for almost 20 years on my 2D... never had an o ring fail or even degrade using it. I use it on all my lights and never had an issue. YMMV.

I use nyogel, armytek do a tube which should last a long time. Less is more, if possible remove O ring and massage into, couple of dabs on threads. Then work a few times with tail cap and any excess remove.

:welcome:

You can't go wrong with Nyogel. Highly recommended.

+1 on nyogel. A little jar seems expensive but it lasts fooooooorrrreeeeevvvveeerrrrrrrrrr.

Thanks all.

50g tube of Nyogel 760G here. I still have a lot left after 5 years.

Take care of your tools and they'll take care of you.

Chris

I have used permatex dielectric grease forever. Mag lite I got in 1988 still has its original orings and is doing fine.

I used Nyogel for many years and I recently shifted to Super Lube Multi-Purpose Synthetic Grease without any particular knowledge on how they actually compare when it comes to flashlight lubrication. My gut says that the Super Lube "feels" a bit more lubricative whereas the Nyogel "feels" relatively sticky: I observe that discoloration (of the grease) takes longer with the Super Lube and that threading and unthreading action is a bit smoother.

I may have bet on the wrong horse, though. Frankly, I chimed in for provoking some well-informed answers to benefit from! :laughing:

I use Haynes Lubri-Film because that's what Malkoff uses...that's all I need to know.

Shen Itsu grease for Honda weather stripping and moldings is what I use for o-rings. A little bit goes a long ways.

Now for threads a synthetic grease won't be a bad choice.